Volume 21, Issue 4, December 1996, Pages 12-23
Mohamed Mohamed Ahmed Mahgoub; Mohamed Gamal Wasel; A. A. Kamel; Mohamed Ghasoub Saafan Mousa
Volume 21, Issue 1, March 1996, Pages 1-11
Mohamed Gamal Hassan Wasel; A. A. Kamel; H. M. Mostafa
Volume 21, Issue 1, March 1996, Pages 12-21
Mohamed Gamal Hassan Wasel; A. A. Kamel; H. M. Mostafa